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United States Patent | 6,139,457 |
Kanemitsu ,   et al. | October 31, 2000 |
A sheet metal pulley has a base part and a cylindrical peripheral wall for winding a belt formed integrally with the base part. An ear is disposed in an end part of the cylindrical peripheral wall. The base part is partitioned into an inner peripheral portion and an outer peripheral portion, with the inner peripheral portion being smoothly connected with the outer peripheral portion through a bent part. The outer peripheral portion is formed into a tapered shape which extends from the bent part and has a diameter which is increased toward the inner side of the cylindrical peripheral wall in the axial direction of the pulley. The outer peripheral portion connected with an end part of the peripheral wall on the side of the ear. Even when the pulley is used for a long term, the connecting portion between the peripheral wall and the base part, etc. is hardly cracked.
Inventors: | Kanemitsu; Toshiaki (Kobe, JP); Oda; Kazuyuki (Hyogo, JP) |
Assignee: | Kabushiki Kaisha Kanemitsu (Hyogo, JP) |
Appl. No.: | 530282 |
Filed: | October 11, 1995 |
PCT Filed: | March 3, 1994 |
PCT NO: | PCT/JP94/00347 |
371 Date: | October 11, 1995 |
102(e) Date: | October 11, 1995 |
PCT PUB.NO.: | WO95/23932 |
PCT PUB. Date: | September 8, 1995 |
Current U.S. Class: | 474/170; 29/892; 242/614; 474/168 |
Intern'l Class: | F16H 055/49; F16H 055/50 |
Field of Search: | 474/94,166,167,168,170 242/155 R,614,614.1 29/892,892.2,892.3 D8/360 |
4468210 | Aug., 1984 | McCutchan, Jr. | 474/170. |
4767387 | Aug., 1988 | Matsuoka et al. | 474/168. |
5123166 | Jun., 1992 | Kanemitsu et al. | 29/892. |
Foreign Patent Documents | |||
47-37971 | Nov., 1972 | JP. | |
51-148551 | Nov., 1976 | JP. | |
54-51255 | Apr., 1979 | JP. | |
55-47047 | Apr., 1980 | JP. | |
64-11330 | Jan., 1989 | JP. |